Its been a while since I built a UDOO image (need another kernel module), when I ran compile.sh, it pulled new source and told me to clone a new build directory.
In the process of cloning, however with UDOO being EOS, is it still possible to build the legacy kernel/image with current sources?

So I did this:
sed -i "s/apt/beta/" /etc/apt/sources.list.d/armbian.list
apt-get update
apt-get upgrade
and it still boots ("deb http://beta.armbian.com $(lsb_release -cs) main utils $(lsb_release -cs)-desktop" didn't work on xenial)